1) Assume the value of a car is a linear function of time. When new the car is worth $26,300; 20 years later the car is worth $1,500. How much will the car be worth 7 years after purchase?
2) Solve the equation: x3 + 3x2 - 6x - 27 = 0
3) Compute the derivative of f(x) = 3x2 - 5x + 2 directly from the definition. Details are part of the answer.
4) Compute the derivative of f(x) = x3 directly from the definition. Details are part of the answer.